From 31d4cc13b791c49fca56a212ea286e2151861878 Mon Sep 17 00:00:00 2001
From: Benjamin Gilbert <bgilbert@backtick.net>
Date: Mon, 13 May 2013 22:24:04 -0400
Subject: [PATCH] Add tests for addClass/removeClass

---
 test/test.html |  1 +
 test/utils.js  | 52 ++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 53 insertions(+)
 create mode 100644 test/utils.js

diff --git a/test/test.html b/test/test.html
index 21bb8b77..ea226cdc 100644
--- a/test/test.html
+++ b/test/test.html
@@ -17,6 +17,7 @@
     <script src="/test/test.js"></script>
     <script src="/test/basic.js"></script>
     <script src="/test/strings.js"></script>
+    <script src="/test/utils.js"></script>
     <script src="/test/dzi-jsonp.js"></script>
 </body>
 </html>
diff --git a/test/utils.js b/test/utils.js
new file mode 100644
index 00000000..c61171ee
--- /dev/null
+++ b/test/utils.js
@@ -0,0 +1,52 @@
+(function() {
+    module("utils");
+
+    test("addRemoveClass", function() {
+        var div = OpenSeadragon.makeNeutralElement('div');
+        strictEqual(div.className, '',
+            "makeNeutralElement set no classes");
+
+        OpenSeadragon.addClass(div, 'foo');
+        strictEqual(div.className, 'foo',
+            "Added first class");
+        OpenSeadragon.addClass(div, 'bar');
+        strictEqual(div.className, 'foo bar',
+            "Added second class");
+        OpenSeadragon.addClass(div, 'baz');
+        strictEqual(div.className, 'foo bar baz',
+            "Added third class");
+        OpenSeadragon.addClass(div, 'plugh');
+        strictEqual(div.className, 'foo bar baz plugh',
+            "Added fourth class");
+
+        OpenSeadragon.addClass(div, 'foo');
+        strictEqual(div.className, 'foo bar baz plugh',
+            "Re-added first class");
+        OpenSeadragon.addClass(div, 'bar');
+        strictEqual(div.className, 'foo bar baz plugh',
+            "Re-added middle class");
+        OpenSeadragon.addClass(div, 'plugh');
+        strictEqual(div.className, 'foo bar baz plugh',
+            "Re-added last class");
+
+        OpenSeadragon.removeClass(div, 'xyzzy');
+        strictEqual(div.className, 'foo bar baz plugh',
+            "Removed nonexistent class");
+        OpenSeadragon.removeClass(div, 'ba');
+        strictEqual(div.className, 'foo bar baz plugh',
+            "Removed nonexistent class with existent substring");
+
+        OpenSeadragon.removeClass(div, 'bar');
+        strictEqual(div.className, 'foo baz plugh',
+            "Removed middle class");
+        OpenSeadragon.removeClass(div, 'plugh');
+        strictEqual(div.className, 'foo baz',
+            "Removed last class");
+        OpenSeadragon.removeClass(div, 'foo');
+        strictEqual(div.className, 'baz',
+            "Removed first class");
+        OpenSeadragon.removeClass(div, 'baz');
+        strictEqual(div.className, '',
+            "Removed only class");
+    });
+})();